Loom.



A..HANDSOHIN & H. KUNY.

LOOM.

APPLICATION FILED FEB.16, 1910,

991,297. I Patented May 2, 1911.

UNITED STATES PATENT OFFICE.

ARNOLD I-IANDSCI-IIN, or BASEL, SWITZERLAND, AND HANS KUNY, or ST. LUDWIG,

GERMANY, AssIoNoRs' or ONE-THIRD 'ro-ennoon srAoHELIN, or BASEL, swrrznn- LAND.

LOOM.

Specification of Letters Patent.

Application filed February 15, 1910.

Patented May 2, 1911. Serial No. 544,069.

To all whom it may concern:

Be it known that we, ARNOLD HANDsoHIN, a citizen of the Republic of Switzerland, and resident of Basel, Switzerland, and HANS KUNY, a citizen of the Republic of Switzerland, and resident of St. Ludwlg, in Upper Alsatia, Germany, have invented new and useful Improvements in Looms, of which the following is a full, clear, and exact specification.

In looms wherein two consecutive wefts, which are introduced into the same warp during one movement of the lay and by means of the same shuttle, are beaten up by the lay, while a change of shed takes place in the same warp after each introduction of the weft (see for example United States Letters Patent No. 944,610, dated December 28th, 1909) there is the objection that the one edge of the web becomes irregular if the material is several centimeters in width, the first inserted weft of each pair of wefts, which are beaten up simultaneously by the lay, taking always an oblique position with respect to the direction of the warp, so that at each beating up a loop is formed at one edge of the warp and protrudes beyond the selvage of the cloth.

Now, this invention has for its object to overcome these defects and to this end the lay carries a finger oscillating about a horizontal axis at one edge of the warp of each fabric produced on the loom, the said finger being actuated from the main shaft of the loo-m so that it presses the first of each of the wefts which are beaten up against the corresponding fabric in pairs and keeps the same pressed against the said fabric until the change of shed has taken place and the introduction of the subsequent weft begins.

In the accompanying drawing, which illustrates a ribbon loom constructed in accordance with this invention, Figure 1 is a side view of the loom partly in section. Figs. 2, 4, and 6 are side views, and Figs. 8, 5 and 7 are corresponding plans of parts of the loom which serve to explain the working.

The ribbon loom shown in the drawing is of the kind described in the United States Letters Patent No. 944,610, wherein two wefts which are consecutively introduced into the same warp by means of the same shuttle are together beaten up by the lay during one movement of the latter, the actuation of the lay a with respect to the actuation of the dobby b and the shuttle 0 being such that for each to and fro movement of the lay, the shuttles a are moved to and fro once and the dobby effects two changes of shed. The mechanisms, by means of which the dobby b, the shuttles c and the lay a are actuated by the main shaft 0? of the ribbon loom in the manner above described, are not illustrated since they are well known.

At the side of the lay nearest the breast beam is situated a horizontal rocking rod 6,

which is provided with a finger g at one edge of the warp of each of the ribbons f made on the loom, and with an arm 71 which, by means of the cord 2', double-arm lever j and cord 70 is connected to the treadle Z which is acted upon by a cam 10 situated on the ma n shaft (Z. The rod 6 is controlled by a spring a so that it tends to press the treadle Z a must the cam.

fter each beat of the lay, the rod 6 and fingers g are in the position shown in Figs. 2 and 3, that is to say,the fingers 9 rest on the lay and the treadle l on the hub of the cam m. (Fig. 1). A change of shed then takes place (Figs. 4 and 5), the lay comes away from the fabric and the shuttles 0 are moved through the shed in the direction indicated by the arrow m, Fig. 5, to put in a weft. As shown in Fig. 5 the weft is somewhat inclined, to the direction of the warp. Owing to the revolution of the main shaft the end of the boss of the cam on has meanwhile come into contact with the treadle Z and has moved the latter away from the main shaft 01 in such a manner that, through the medium of the cord 7?, lever j, cord i and arm in, the rod 6 is turned against the action of the spring a in the direction of the arrow y (Fig. 4), that is to say, the fingers g are ra1sed as shown. This movement of the fingers g in the direction of the arrow 3 continues until the shuttles 0 have completed their movement in the direction of the arrow 00, each finger g pressing the already introduced weft thread against the fabric and continuing to press the same in the direction of the warp (Figs. 6 and 7 until the second change of shed has taken place and the shuttles begin to move in the direction opposite to that of the arrow w through the second open shed, in order to put in a second weft while the lay is nearing the breast beam, in order to beat the two introduced wefts. As soon, however, as the sec- 0nd change of shed has taken place the spring a again returns the rod 6 and fingers 9 into the position shown in Figs. 2 and 3 after the cam boss has become disengaged from the treadle Z. Owing to the fact that the fingers 9 press the primarily introduced weft until the second change of shed has been etfected, ribbons are obtained the edges of which do not show any protruding loops whatever.

This invention can of course be applied to ribbon looms in which, as in the case of velvet ribbon looms, two wefts are introduced simultaneously in opposite directions through two superposed sheds, and can also be applied to looms'o-f all kinds.

In the drawing, the fingers g are shown of hook shape, but this form is not absolutely essential.

That we claim is:

1. In a loom, the combination of a lay, adapted to beat up together two consecutive wefts during one movement thereof, of means for changing the shed twice for each beat up of the lay and of a shuttle introducing the weft into two successive sheds of the same warp for each beat up of the lay, with a finger mounted on the lay, opposite one of the edges of the fabric manufactured on the loom, and adapted to oscillate about a horizontal axis on the said lay, a main shaft from which said finger is actuated topress against the fabric the first of each pair of wefts to be beaten up simultaneously by thelay, until a change of shed has been eifected and the introduction of the succeeding weft is beginning, substan tially as described.

2. In a ribbon loom, the combination of a lay, adapted to beat up together two consecutive wefts during one movement thereof, of means for changing the shed twice for each beat up of the lay and of a shuttle introducing the weft into two successive sheds of the same warp for each beat up of the lay, with a spring controlled horizontal rocking rod, extending the breadth of the loom and provided with a plurality of fingers, each of the said fingers being mounted on the lay, opposite one of the edges of one of the fabrics manufactured on the loom, an arm associated with the said rod and connected by cords to a treadle, a main shaft provided with a cam adapted to actuate said treadle, said cam turning said rod about its longitudinal axis through the medium of said arm, cords and treadle in such a manner that each of the said fingers presses against the corresponding fabric the first of each pair of wefts to be beaten up simultaneously by the lay, until a change of shed has been effected and the introduction of the succeeding weft is beginning, substantially as described.

In witness whereof we have hereunto signed our names this 3d day of February 1910, in the presence of two subscribing witnesses.

ARNOLD I-IANDSCHIN. V HANS KUNY. Witnesses:

GEO. Girrorm, AMAND Rrrrnn.

Copies .of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

